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3 Sheets-Sheet 1.

(No Mom.) a

W. D. SHERMAN.

TILE-MACHINE.

No. 405,184. Patented June 11, 1889.

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(No Model.) 3 SheetswSheet 2.

. W. D. SHERMAN.

TILE MACHINE. No. 405,184. lafnented June l1, 1889.

WIESSES .dttornegy/ (No Model.) 3 sheetsT-sheet 3. W. D. SHERMAN.

TILE MACHINE.

No. 405,184. Patented June 11, 1889.

I INI/ENT() I l, fm ./torney/ WI TNESSES @C l W UNITED STATES PATENT OEEICEa VILLIS D. SHERMAN, OF OMAHA, NEBRASKA, ASSIGNOR TO THF; UNION HYDRAULIC DRAIN TILE COMPANY, OF SAME PLACE.

TILE-MACHINE.

' SPECIFICATION forming part of Letters Patent No. 405,184, dated June 1v1, 1889.

Serial No. 270,344. (No model.)

To all whom, t may concern.-

Be a known that I, WILLIS D. SHERMAN, a

ful Improvements in Tile-Machines; and I do' hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference bein ghad to the accompanying drawings, which form a part of this specification, and in whiche Figure l is a side view of my improved machine or mill. Fig. 2 is a vertical sectional view through the lower portion of the core, table, and mechanism for operating the core. Fig. 3 is a side view of alower portion of the core, and Fig. dis a bottom View of the same.

This invention relates to tile-machines, and is designed as an improvement upon a tilemachine for which application for Letters Patent of the United States was filed March 8, 1888, Serial No. 266,553.

Referring to the accompanying drawings, in which the same letters of reference indicate corresponding partsin each of the ures, A indicates a support or column secured to the base B and provided at its up# per portion with the tamping mechanism O, and having a table D movably secured to its lower portion. The tamping mechanism and table are substantially the same as are shown and described in my application, Serial No. 270,345, filed April Il, 1888, to which reference is made for a more detailed description.

The lower end of` the core E is provided with a divided nut F, which can be caused to engage with or be disengaged from the threads of a vertical screw-threaded shaft G, which is secured in a bracket Hat the lower portion of the support A. This shaft is operated by means of the bevel-gearl upon the shaft J in the same manner as described in my application above referred to. The nut F is secured upon the upper side of a stationary plate K by means of the dovetailed flanges L L, which t within corresponding grooves in the plate. This plate is provided with a central aperture for the passage of the shaft G, and also with two radial slots M M upon diametrically-opposite sides of the central aperture. Below this stationary plate is another plaie N, which is also provided with two slots O O and with a handle or lever P, by means of which it may be rotated.

The lower plate N, which is provided with a central aperture for t-he passage of the shaft G, is kept from falling down by, means of two pins Q Q, vwhich are secured at their upper ends in the halves of the divided nut' F and pass down through the slots M M in the stationary plate and through the slots O O in the movable plate, and are provided with nuts upon their lower ends below the lower plate. The slots O O in the plate N are curved, but are not concentric with the center, but have one end of each nearer the center than the other end, so that by rotating the lower plate the pins Q Q, and with them the halves of the nut, are moved toward the shaft G, or. away from it, as the lower plate is rotated the one way. or the other. By making the lower end of the shaft without any threads the downward movement of the nut upon the shaft is stopped automatically, for as soon as the nut comes down to this part of the shaft it can go no farther, owing to the absence of screw-threads.

To cause the machine to stop automatically whenever the tile reaches a certain length or height, one side of the table is provided with a cam-guide R, similar to the ones described in the application above referred to, in which moves a pin upon the lower end of a lever S, pivotally secured to the side of the support A. The upper end of this lever engages with the lower end of a bell-crank lever U, also pivotally secured upon the side of the column or support. The other end of this bell-crank lever engages with the grooved hub of a bevelgear V upon the lower end of the vertical shaft W, similar to that described in my other application. The upper portion of this shaft W is also provided with sprocket wheels, which communicate motion to the tamping mechanism by means of chains in the saine manner as shown and described in said former application.

The weight of the table, which slides up and down upon a face-plate secured to the lower portion of the support or column A, is

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counterbalanced by means of a weight X upon the outer end of a lever Y, which is pivotally secured to the support A. The inner end of this lever is provided with a slot, which engages with a pin Z upon the back part of the table. In this manner the table and pin can move in a vertical direction, while the end of the lever swings in the are of a circle, whic could not be done without the slot.

In operation an empty shell is placed upon the table, and the core is then forced up into position byV means of the divided nut until it project-s through the table as far as required, The guides a a upon the lower end of the core, which engage with two rods b l), which are secured to the under side of the table, prevent the core from turning when the shaft is turned up into it, and also cause it to nieve up and down in a straight line. IVhen the core has thus been raised into position, it is caught and held by means of a spring-catch which prevents its falling or being forced down as the tile is being formed around it. As the core reaches this point, it reaches the upper end of the shaft, and of course as soon as the nut works olf the end of the shaft the weight upon the lever at the rear of the machine forces the table and core still farther upward, or until the top of the table is just at the lower ends of the tamping-bars. As the table thus reaches its highest point, the cam-guide at the side of the t-able throws the levers upon the side of the support, so that the wheel at the bottom of the vertical shaft at the rear of the machine is thrown into engagement with the driving mechanism an d sets the tamping mechanism in operation. The material of which the tile is to be` formed is now fed in between the shell and core through a funnel c, which is supported at the ends of the arms d d, which are secured to the support and project out over the table. As the material is thus fed into the shell, it is gradually and evenly packed into a tile by the operation of the tamping-bars, which force the table and increasing tile downward. By moving the weight nearer to or farther from the pivotal point the density of the tile can be decreased or increased, as desired. Vhen the table reaches its eXtreme downward movement, the cam-guide upon its side throws the levers pivoted upon the side of the support in the opposite direction from what they were thrown when the table was at its highest point, thus causing the bevel-wheel upon the lower end of the vertical shaft to be thrown out of engagement with the main driving mechanism, and thus stop the tamping-bars. The divided nut is now opened and made to engage with the upper end of the screwthreaded shaft, which is then caused to be rotated in the proper direction. This draws the core down out of the completed tile, which, together with the shell, is removed from the table. An empty shell is then placed in position upon the table and the core forced up through the table as far as it will go by reversing the motion of the shaft. The table is then elevated and another tile is formed.

I-Iaving thus described my invention, I claiml. In a tile-machine, the combination of a support, a table movably secured to its lower portion, a core through the table, the lower end of which is provided with a divided nut, a vertical screw-threaded shaft, and tampingbars above the table.

2.r In a tile-machine, the combination of a support, a table secured to its lower portion, a core through the table, a plate in the lower end of the core having dovetailed grooves in its upper surface, a divided nut upon the plate having dovetailed flan ges upon its lower side, a vertical screw-threaded shaft below the core, and tamping-bars above the table.

3. In a tile-machine, the combination of a support, a table secured to its lower portion, a core through the table, two plates in the lower portion. of the core, one of which is stationary and the other is movable, radial slots in the stationary plate and curved slots in the movable plate, one end of each of the curved slots being` nearer the center of the plate than the other end, a bolt in each half of the divided nut passing down through the slots in the two plates, nuts upon the lower ends of the bolts, a vertical shaft below the core, and tamping-bars above the table.

4. In a tile-machine, the combination of a support, a table secured upon the lower portion of the support, a core through the table, a divided nut in the lower portion ofthe core, a vertical shaft below the core, screw-thread ed throughout, except at its lower end, and tamping-bars above the table.

5. In a tile-machine, the combination of a support, a table secured thereto, a cam-guide upon one side of the table, a vertical shaft at the rear of the machine, a bevel-wheel upon the lower portion of said shaft, two levers pivotally secured upon the side of the support, one end of one of which engages with the cam-guide, and the opposite end of the other lever engages with the bevel-wheel upon the shaft, and tamping-bars above the table.

(i. In a tile-machine, the combination of a support, a table inovably secured to its lower portion, a lever pivotedf to the support, the inner end of which is slotted, a pin. upon the table, which engages with the slotted end of the lever, a weight upon the outer end of the lever, and tamping-bars above the table.

In testimony that I claim the foregoing as my own I have hereunto aiiixed my signature in presence of two witnesses.

VILLIS D. SHERMAN.

fitnessesz FRED J. BoRTHwrcK, Guo. M. RHETT.

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